Horology . the portion of a watch or clock that measures beats and controls the speed of the going train. Compare anchor escapement , deadbeat ( def. 1 ) , lever escapement.

a mechanism for regulating the motion of a typewriter carriage, consisting of pawls and a toothed wheel or rack.

a mechanism in a piano that causes a hammer to fall back into rest position immediately after striking a string.

an act of escaping.

Archaic . a way of escape; outlet.

noun

break , breakout , decampment , flight , getaway